| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Dongbang, Phosi | 13000 |
| Postal/ZIP Codes in Dongsavanh, Phosi | 13000 |
| Postal/ZIP Codes in Nonesaat, Phosi | 13000 |
| Postal/ZIP Codes in Nonesavang, Phosi | 13000 |
| Postal/ZIP Codes in Nonsavat, Phosi | 13000 |
| Postal/ZIP Codes in Phosi, Phosi | 13000 |
| Postal/ZIP Codes in Samoun, Phosi | 13000 |
| Postal/ZIP Codes in Thammixay, Phosi | 13000 |
| Postal/ZIP Codes in Tho, Phosi | 13000 |